Stress Intensity Factors for Semi-Elliptical Surface Cracks in Round Bars Subjected to Mode I (Bending) and Mode III (Torsion) Loading

Fonte, M.; Gomes, Edgar C.; Freitas, M.

doi:10.1016/s1566-1369(99)80019-3

Cited by 13 publications

(11 citation statements)

References 13 publications

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“…This conclusion had already been reached by Ehart et al 27 with another specimen geometry. Fonte 28 with a pure torsion loading in a shaft having a semielliptical crack found all three modes of propagation. For the particular geometry of the specimen under study, there is a warping of the cross‐section with a global rotation that does not seem to indicate a clear mode I opening of the crack.…”

Section: Resultsmentioning

confidence: 91%

Mixed‐mode delamination growth of laminar composites by using three‐dimensional finite element modeling

Silva

Freitas

2003

Fatigue Fract Eng Mat Struct

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Delamination is one of the most frequent failure modes in laminated composites. Its importance is crucial, because a delamination can occur in the interior of a panel without any noticeable damage on the surface, drastically reducing its strength and stiffness. A study has to be made on critical dimensions of delaminations and their shape, through the calculation of the strain energy release rate (SERR), G. This study was performed numerically, for a given geometry, with varying loads and shapes of delamination, in pure and mixed‐mode propagation. All numerical values were obtained with three‐dimensional finite element (FE) analyses from a commercial package. The use of three‐dimensional analyses in simple geometries helps establish the basis for the more complex ones, and the correspondence with the usual analytical or numerical bi‐dimensional plane‐strain analysis. The conclusions were (a) G is not constant along the crack tip, even for mode I propagation and straight crack tip; (b) the mean value of G obtained from a three‐dimensional analysis equals the value obtained in bi‐dimensional plane‐strain analysis; (c) in mixed‐mode propagation, the method exhibits a good correlation with experimental results and (d) the shape and mode partitioning of the SERR depend not only on the loading, but also on the shape of the crack front.

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Section: Resultsmentioning

confidence: 91%

Mixed‐mode delamination growth of laminar composites by using three‐dimensional finite element modeling

Silva

Freitas

2003

Fatigue Fract Eng Mat Struct

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“…В существующих исследованиях уделено большое внимание задачам о трещине в сплошном цилиндре, нагруженном изгибающим и крутящим моментами [5,6]. Однако все они решались для трещин, расположенных в поперечном сечении стержней, что нехарактерно для торсионных валов, где преобладающим напряженным состоянием является чистый сдвиг и рост усталостных трещин наблюдается под углом к оси торсионного вала в направлении перпендикулярном действию главных растягивающих напряжений.…”

Section: задание тарировочных функцийunclassified

Методика Прогнозирования Ресурса Торсионных Валов Систем Подрессоривания Транспортных Машин

Горелов¹,

Дубин²,

Комиссаров³

et al. 2019

Труды НГТУ им. Р.Е. Алексеева

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the article presents a methodology for assessing the service life of torsion shafts of individual suspension systems of transport vehicles, based on modern principles of the theory of movement of transport vehicles and fracture mechanics. Design/methodology/approach: the technique is based on the developed mathematical model for the propagation of an edge crack inclined relative to the longitudinal axis of the shaft located on the cylindrical part of the torsion shaft under the conditions of a simplified plane stress state. Originality/value: a distinctive feature of the model is the use of original dependencies to determine the values of the Kcalibration function when determining stress intensity factors, as well as taking into account the influence of force and kinematic factors determined by misalignment, collapse of the torsion shaft bearings and deformation of large axes of the balancers on the stress state in the vicinity of the front of the fatigue crack.

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“…Fatigue crack propagation and fracture behaviour of rods subjected to various loading and boundary conditions has been discussed in [3,20,44]. …”

Section: Introductionmentioning

confidence: 99%

Dynamic analysis of a flexible linkage mechanism with cracks and clearance

Dupac

Beale

2010

Mechanism and Machine Theory

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Stress Intensity Factors for Semi-Elliptical Surface Cracks in Round Bars Subjected to Mode I (Bending) and Mode III (Torsion) Loading

Cited by 13 publications

References 13 publications

Mixed‐mode delamination growth of laminar composites by using three‐dimensional finite element modeling

Mixed‐mode delamination growth of laminar composites by using three‐dimensional finite element modeling

Методика Прогнозирования Ресурса Торсионных Валов Систем Подрессоривания Транспортных Машин

Dynamic analysis of a flexible linkage mechanism with cracks and clearance

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